/*
 * Licensed to Jasig under one or more contributor license
 * agreements. See the NOTICE file distributed with this work
 * for additional information regarding copyright ownership.
 * Jasig licenses this file to you under the Apache License,
 * Version 2.0 (the "License"); you may not use this file
 * except in compliance with the License.  You may obtain a
 * copy of the License at the following location:
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package com.sunkey.log.common.spi;

import org.aspectj.lang.JoinPoint;


/**
 * PrincipalResolver that use default value.
 *  
 * @author sunkey
 * @date Aug 23, 2014
 */
public final class DefaultPrincipalResolver implements PrincipalResolver {
    

    public String resolveFrom(final JoinPoint joinPoint, final Object retVal) {
        return resolve();
    }

    public String resolveFrom(final JoinPoint joinPoint, final Exception retVal) {
        return resolve();
    }

    public String resolve() {
        return UNKNOWN_USER;
    }
    
    
}
